C) pressure gradient

D) weather conditions

5. Soil is considered as polluted with lead if its concentration in soil
A) is equal to maximum admissible concentration of lead in soil

B) is less then maximum admissible concentration of lead in soil

C) is higher then maximum admissible concentration of lead in soil

D) is less or equal to maximum admissible concentration of lead in soil

6. Lead compounds are added to the gasoline in order to

A) enhance fuel efficiency.

B) increase octane number of the fuel

C) reduce emissions of green house gases

D) all of the above

7. Which of the following is NOT considered a "Greenhouse Gas?"

A) water vapours

B) nitrous oxide

C) carbon dioxide

D) hydrogen

E) none of the above

8. Replacement of incandescent bulbs by fluorescent lights saves ________of electricity consumed.

A) 80%

B) 60%

C) 40%

D) 20%

E) None

9. Rivers and lakes represent only ______ of the total water resources on the Earth.

A) ~3%

B) 0.02%

C) 0.82%

D) 0.50%

10. Which country in Central Asia is rich in water resources and has more control over these resources:

A) Kyrgyzstan

B) Uzbekistan

C) Kazakhstan

D) Turkmenistan

11. Excessive amounts of fertilizers runoff into surround water reservoir and cause eutrophication.

A) True

B) False

12. Domestic water is mostly used for the following purpose:

A) taking a bath/ a shower

B) toilet flashing

C) drinking and cooking

D) washing dishes

13. Hydrogen represents

A) renewable energy source

B) primary energy source

C) secondary energy source

D) none of the above.

14. What should be on top of your list of energy saving measures?

A) turning off lights
B) insulation
C) closing windows
D) turning off electric appliances

15. Which of the following types of radiation is characterized by the highest energy?

A) ultra-violet radiation

B) infra-red radiation

C) visible light

D) microwaves

E) X-rays

16. Renewable resources are not inexhaustible resources.

A) True

B) False

17. Higher temperature of the atmospheric air is associated with _________ pressure, lower temperature is associated with ________ pressure.

A) lower, higher

B) higher, lower

C) constant, changing

D) changing, constant

18. Fossil fuels currently supply about ____ percent of all world commercial energy supplies.
A) 97
B) 87
C) 55
D) 33

19. Country with the largest reserves of oil in Latin America

A) Colombia

B) Mexico

C) Venezuela

D) Brazil

E) Argentina

20. Which air pollutant combines with atmospheric water to produce acid rain?

A) ozone

Дата добавления: 2015-11-16